ps2write : Convert shadings into a clipped image (continued 7).

DETAILS :

1. Check for empty bbox before pdf_setup_masked_image_converter,
   because memory devices with empty bbox fail.

2. Create a copy of a path_intersection before scaling it,
   because it may be shared.

3. Fixed the client name gdev_pdf_fill_path when calling some path functions.

Debugged with 478-01.ps .

EXPECTED DIFFERENCES :

None.

git-svn-id: http://svn.ghostscript.com/ghostscript/trunk@5820 a1074d23-0009-0410-80fe-cf8c14f379e6

1 files changed, 15 insertions, 6 deletions

diff --git a/gs/src/gdevpdfd.c b/gs/src/gdevpdfd.c
index 320bd0dc0..0c0fe52f8 100644
--- a/gs/src/gdevpdfd.c
+++ b/gs/src/gdevpdfd.c
@@ -1072,6 +1072,8 @@ gdev_pdf_fill_path(gx_device * dev, const gs_imager_state * pis, gx_path * ppath
 		return code;
 	    if (code)
 		rect_intersect(bbox, bbox1);
+	    if (bbox.p.x >= bbox.q.x || bbox.p.y >= bbox.q.y)
+		return 0;
 	    sx = fixed2int(bbox.p.x);
 	    sy = fixed2int(bbox.p.y);
 	    gs_distance_transform_inverse(sx * pdev->HWResolution[0] / 72, 
@@ -1126,18 +1128,25 @@ gdev_pdf_fill_path(gx_device * dev, const gs_imager_state * pis, gx_path * ppath
 	    if (code >= 0) {
 		/* See gx_default_fill_path. */
 		gx_clip_path cpath_intersection;
-		gx_path path_intersection;
+		gx_path path_intersection, path1, *p = &path_intersection;
 
 		gx_path_init_local(&path_intersection, pdev->memory);
+		gx_path_init_local(&path1, pdev->memory);
 		gx_cpath_init_local_shared(&cpath_intersection, pcpath, pdev->memory);
 		if ((code = gx_cpath_intersect(&cpath_intersection, ppath, params->rule, (gs_imager_state *)pis)) >= 0)
 		    code = gx_cpath_to_path(&cpath_intersection, &path_intersection);
+		if (code >= 0 && scale > 1) {
+		    code = gx_path_copy(&path_intersection, &path1);	
+		    if (code > 0) {
+			p = &path1;
+			code = path_scale(&path1, scalex, scaley);
+		    }
+		}
 		if (code >= 0)
-		    code = path_scale(&path_intersection, scalex, scaley);
-		if (code >= 0)
-		    code = gx_dc_pattern2_fill_path(&dc, &path_intersection, NULL, (gx_device *)&cvd.mdev);
-		gx_path_free(&path_intersection, "shading_fill_path_intersection");
-		gx_cpath_free(&cpath_intersection, "shading_fill_cpath_intersection");
+		    code = gx_dc_pattern2_fill_path(&dc, p, NULL, (gx_device *)&cvd.mdev);
+		gx_path_free(&path_intersection, "gdev_pdf_fill_path");
+		gx_path_free(&path1, "gdev_pdf_fill_path");
+		gx_cpath_free(&cpath_intersection, "gdev_pdf_fill_path");
 	    }
 	    if (code >= 0) {
 		code = pdf_dump_converted_image(pdev, &cvd);